4. A plating company has two silver plating systems with variances or and 02'. You, as...
4. A plating company has two silver plating systems with variances or and 02'. You, as the manager, desired to compare the variability in the silver plating done by System-1 with that done by System-2. If independent random sample of size ni 12 of the System-1 yields sj -0.042 mil and sample of size nz 10 of System-2 yields 52 -0.038 mil, does this support on-07? (Use a 0.05) Please draw the distribution curve and indicate rejection regions.